Crosslinkable interpolymer complexes of novolac resin and poly(ethylene oxide)

Thermomechanical and Rheological Properties of High‐Molecular‐Weight Poly(ethylene oxide)/Novolac Blends

“…[34,35] The miscibility of the blends is attributed to the presence of intermolecular association via H-bonding between the -OH groups of novolac with oxygen atoms of ether chain of PEO. [27,33] It was also observed that the damping (loss tangent peak value) increased dramatically with increasing novolac concentration in the blend. This can be explained by considering two factors.…”

“…This clearly indicates that there is polar interactions between the -OH groups of PEO with ether chain of PEO via H-bonding. [27,33] Further support for this interaction in the blends has been provided by mechanical and rheological tests as discussed next.…”

“…The sizes of spherulites decrease with increasing novolac concentration. This behavior can be attributed to the disturbance of radial orientation caused by the amorphous novolac during the crystallization process as reported for PEO blends [33,36] and nanocomposites. [19,20,31] This is presumably because the amorphous PEO/novolac mixture is engulfed in the interlamellar region during the crystallization of PEO.…”

Effect of Cationic Polyelectrolyte on the Flow Behavior of Hydroxypropyl Methyl Cellulose/Polyacrylic Acid Interpolymer Complexes

“…Additionally, previous studies on IPC formation between interacting polymer systems showed that generally a shift was observed in the IR wavelength due to the stretching of the -OH groups of IPC compared to the pure polymers. [34,18] Similarly, the bands observed at 2836 and 2931 cm −1 , corresponding the C-H groups of the HPMC was observed at 2833 and 2929 cm −1 for the precipitated sample. The peak at 1652 cm −1 , due to the NH 2 groups of the pure PEI, was in the form of a small shoulder in the spectrum of the precipitate.…”

Micro- and Macrophase Separation in Phenolic Resol Resin/PEO-PPO-PEO Block Copolymer Blends: Effect of Hydrogen-Bonded PEO Length

“…[10] Phenolic resins are particularly interesting components to study microphase separation, as they allow strong hydrogen bonds with hydrogen bonding acceptors, for example, in novolac/PEO blends. [14] Previously we showed that novolac blended with poly(2-vinylpyridine)-block-poly(isoprene) (P2VP-block-PI) forms lamellar, cylindrical (worm-like), and spherical structures, where there is hydrogen bonding between novolac and P2VP. [13] Note that the hydrogen bonds in this case have an important advantage over the reported epoxy/block copolymer systems.…”